Young, the dynamic center fielder for Arizona, filled the final spot for the National League and Swisher, the clutch right fielder for the Yankees, completed the lineup card for the American League, as announced by Major League Baseball on Saturday.
Both will be making their first appearances in the Derby, to be held Monday night in advance of Tuesday's All-Star Game in Anaheim. Both are first-time All-Stars as well.
Young, batting .263 with 15 homers and 60 RBIs entering Saturday's games, will be joined by the Brewers' Corey Hart (.287, 20 homers, 63 RBIs), the Cardinals' Matt Holliday (.303, 15 homers, 47 RBIs) and the Marlins' Hanley Ramirez (.292, 13 homers, 53 RBIs) on the National League squad.
"It could be a once-in-a-lifetime opportunity to be in a Home Run Derby," Young said Thursday, when he first got the invitation to participate. "So I would love to go out there and enjoy the experience. It's an honor."
Swisher, batting .304 with 14 homers and 48 RBIs entering Saturday's games, will join American League entrants Miguel Cabrera, who hit his 22nd homer Saturday and entered the game batting .346 with 74 RBIs, along with David Ortiz (.262, 17 homers, 56 RBIs) of the Red Sox and Vernon Wells (.269, 19 homers, 49 RBIs) of the Blue Jays.
"I used to do this in the backyard when I was 6 years old, and now I get to actually do it on the big stage," Swisher said.
"I have to do it like I do everything -- just live in the moment. Why not just have a blast with it? It's going to be a lot of fun and I'm nervous already, but I'm going to go out and have an absolute blast. I'm going to soak up that moment."
Ortiz is the contest's veteran, with this his fourth appearance, the first three coming in 2004-06. Cabrera was entered in the 2006 event at PNC Park, and Holliday was in the '07 one at AT&T Park. Hart, Ramirez and Wells are first-timers like Young and Swisher.
The Derby will be broadcast live on ESPN, ESPN HD, ESPN Deportes, ESPN 3D and ESPN Radio in the United States beginning at 8 p.m. ET on Monday.
The 81st MLB All-Star Game will be televised nationally by FOX Sports, in Canada by Rogers Sportsnet and Sportsnet HD and Le Reseau des Sports, and around the world by Major League Baseball International, on Tuesday, with pregame ceremonies beginning at 8 p.m. ET. ESPN Radio will provide exclusive national radio coverage. MLB Network, MLB.com and Sirius XM also will provide comprehensive All-Star Game coverage.
John Schlegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.